Python Jupyter笔记本电脑可以'；找不到matplotlib

当我尝试在虚拟环境中运行matplotlib时，我得到的结果就是这样

ImportError                               Traceback (most recent call last)
<ipython-input-1-d0b23255e9ca> in <module>()
      1 import cv2
      2 import numpy as np
----> 3 import matplotlib.pyplot as plt
      4 #%matplotlib inline

ImportError: No module named 'matplotlib'

---

我遗漏了什么？

你的jupyter笔记本从哪里开始？也可以从虚拟环境中？

（opencv）username | ~/Dropbox/code/pydev/cv |-->jupyter notebook open_cv|u getting|u started.ipynb

@Psidom是的，这正是我要做的。如果键入

pip freeze

？Jupyter笔记本和matplotlib都包括在列表中吗？

cycler==0.10.0 matplotlib==2.0.0.0 numpy==1.12.0 pyparsing==2.1.10 python dateutil==2.6.0 pytz==2016.10 six==1.10.0

您的Jupyter笔记本从哪里开始？也可以从虚拟环境中？

（opencv）username | ~/Dropbox/code/pydev/cv |-->jupyter notebook open_cv|u getting|u started.ipynb

@Psidom是的，这正是我要做的。如果键入

pip freeze

？

Jupyter笔记本

和

matplotlib

都包括在列表中吗？

cycler==0.10.0 matplotlib==2.0.0 numpy==1.12.0 pyparsing==2.1.10 python dateutil==2.6.0 pytz==2016.10 six==1.10.0

Requirement already satisfied: pyparsing!=2.0.0,!=2.0.4,!=2.1.2,!=2.1.6,>=1.5.6 in ./.envs/opencv/lib/python3.5/site-packages (from matplotlib)
Requirement already satisfied: six>=1.10 in ./.envs/opencv/lib/python3.5/site-packages (from matplotlib)
Requirement already satisfied: cycler>=0.10 in ./.envs/opencv/lib/python3.5/site-packages (from matplotlib)
Requirement already satisfied: pytz in ./.envs/opencv/lib/python3.5/site-packages (from matplotlib)
Requirement already satisfied: numpy>=1.7.1 in ./.envs/opencv/lib/python3.5/site-packages (from matplotlib)
Requirement already satisfied: python-dateutil in ./.envs/opencv/lib/python3.5/site-packages (from matplotlib)